A student is drawing an image formed by a thin lens and can clearly construct the $P$-ray and $M$-ray. Which statement is most accurate?

• A. Those two rays are sufficient to locate the image because the image point is where the two rays or their backward extensions intersect.
• B. All three principal rays must always be drawn because any two rays generally intersect at different points.
• C. Two rays are sufficient only for converging lenses, not for diverging lenses.
• D. Only the $F$-ray and $M$-ray may be used to determine image position for a lens.

Answer: (A)